Medical Reports & Case Studies A Case of Kwashiorkor Presenting with Pericardial Effusion

Introduction: Kwashiorkor is a type of protein-calorie malnutrition often seen in children of impoverished countries and famine. It is a result of insufficient protein intake in the context of adequate caloric intake. Case report: We report a case of a 13-year-old male with trisomy 21 in Southwestern Ontario, Canada who presented with bilateral pneumonia, pericardial effusion and peripheral edema. Evaluation revealed severe dietary restriction, consistent with kwashiorkor. Child was placed on severely restrictive diet, particularly limiting dairy intake to one daily cup of plain, unfortified yogurt. His hospital course was complicated with severe hypocalcemia, hypomagnesemia and hypophosphatemia. These findings resolved gradually upon slow introduction of well-balanced diet and adequate caloric and protein intake. Conclusion: Malnutrition is often underdiagnosed or misdiagnosed in developed countries with devastating outcomes if unrecognized. This makes it imperative to consider this diagnosis, recognize potential risk factors and be prepared to accurately assess overall nutritional status.

in Canada. He is the first child born to parents of East Indian descent (unknown exact geographic region).
Beside the trisomy 21 features, the physical examination revealed a pale, lethargic boy with facial edema, hepatomegaly, ascites, pedal edema, and non-specific dermatitis. His weight on admission was well below the 5 th percentile on both the traditional CDC Growth Charts for Children with Down syndrome, as well as the newer growth charts based on the Down Syndrome Growing Up Study (DSGS) [4]. His midupper-arm circumference was <11.5 cm; weight-for-height Z score <3. Initial echocardiography showed a significant pericardial effusion with echocardiographic evidence of tamponade and mildly increased right ventricle systolic pressure, as well as a known small ASD ( Figure 1). This was managed with high-dose ibuprofen for 10 days and 7-day course of prednisone, with no significant improvement in the effusion. Because of the lack of response to the anti-inflammatory drugs, other rare causes of pericardial effusion were considered; taking into consideration the history of poor weight gain, dietary restrictions and electrolyte abnormality, the diagnosis of Kwashiorkor was considered as a potential cause for the pericardial effusion. Upon admission, a Registered Dietitian was consulted to assess the adequacy of calcium intake given his critically low blood level. The Registered Dietitian conducted a 24 Hour Dietary Recall with the patient's mother and used the aid of measuring cups to help estimate usual volume. Mom reported that the diet consisted of pureed or well-mashed foods of cream of wheat, white rice, small amounts of lentils, spinach, carrots, unfortified (homemade) yogurt and ghee. Mom reported the patient does not consume any fruits or any other vegetables and has not consumed any liquid milk in many years. When comparing his best usual intake to Canada's food guide to healthy eating, on average, his intake is below the recommendations for ages for the majority of food groups ( Table 1). The 24-hour Dietary Recall was than analyzed using ESHA, a computer diet analysis program to help assess the intake of micro and macronutrients. When comparison to the recommendations for age, the patient's intake was well below recommendations for a variety of macro and micronutrients (Tables 2 and 3). He was found to have multiple severe nutritional deficiencies, including protein, calcium, magnesium, 25-Vitamin D, phosphate, and iron (Table 4). He was asymptomatic despite the very low ionized calcium levels. He required supplementation with intravenous calcium gluconate as well as calcium carbonate via NG tube for his long-term supplementation.
The patient, on his best intake consumed 1.47 g/kg of protein (but more recently consuming 50% of this or 0.74 g/kg) which compares to 0.95 g/ kg recommended for age. Once the patient became stable medically, the Registered Dietitian met with mom and dad on a number of occasions to provide nutrition education and a Pureed Diet Plan for home. This plan included 1800-1900 calories per day and provided recommended number of servings, serving sizes and additional recommendations for the parents to follow to help ensure that the patient had a well-balanced variety of macro and micronutrients. A written copy of the plan was given to parents for their use at home (Table 5). We also placed a referral for a Community Care Access Centre (CCAC) Registered Dietitian to continue to follow the patient and provide additional education and follow-up post hospital discharge. While in hospital, the patient also developed hyponatremia secondary to syndrome of inappropriate antidiuretic hormone (SIADH), which required acute treatment in the form of hypertonic saline and later fluid restriction. It was thought that his chronic illness and the pericardial effusion could be contributing to his SIADH. This patient's history, clinical picture, various electrolyte disturbances, and complications were consistent with Kwashiorkor malnutrition. With appropriate nutritional and caloric requirements, he became increasingly active. His ascites and hepatomegaly also resolved. The pericardial effusion, which had been initially treated with ibuprofen and prednisone to no effect, also improved with appropriate targeted nutritional therapy ( Figure 2). After more than a month-long     Iron (μmol/L) 6 9 (was checked 3 months following discharge) hospital stay, all biochemical parameters had returned to normal, the patient had resumed oral feeding, and he was discharged in a stable condition on his home medications as well as several nutritional supplements.

Limitations
It is important to note that dietary analysis is limited to a single 24 hour recall provided by the patient's mother and that the recall estimated the patient's "best" intake. Also, the fact that the diet was initiated few years ago made it tricky to memorize it all in details.

Discussion
Kwashiorkor is a rare cause of pericardial effusion, and can be severe like in this case causing echocardiographic evidence of tamponed. There are many cases of Kwashiorkor malnutrition in U.S. literature that have described infants who have suffered significant dietary restriction by ''well intentioned", but ultimately misguided, parents, as was the case in our patient. This child had previously been treated for inflammatory causes of pericardial effusion with no response. Additionally, his primary healthcare provider had never addressed his poor weight gain and nutritional status. The diagnosis of Kwashiorkor was made  subsequently upon discovering multiple nutritional deficiencies and clinical nutritional assessment. Kwashiorkor is often underdiagnosed or misdiagnosed in developed countries. The results, if unrecognized, may be devastating. This makes it imperative that physicians consider this diagnosis, recognize potential risk factors, and be prepared to accurately assess overall nutritional status of patients, especially vulnerable populations such as those with trisomy 21. Additionally, protein malnutrition should be considered in any child presenting with PE unresponsive to conventional treatment.